/ Dictionary / Index L lift pump: Meaning and Definition of Find definitions for: lift' pump" Pronunciation: [key] a pump in which a liquid is lifted rather than forced up from below. Cf. force pump. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. liftoff hinge lift-slab Related Content Daily Word Quiz: hedonist Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language